Actually I'm not seeing this at all. Gus spends 90% of the time standing with me. When he attempts takedowns its usually happens when Gus's stamina is low. Also Gus does attempt takedowns in real life. According to this:
http://www.ufc.com/event/UFC178
He lands 2 takedowns a fight on average. Jones averages 2.37. So Gus should be attempting takedowns.